function main(input = ``) {
  let lines = input.split('\n');

  let [boxSize] = lines[0].split(' ').map((val) => parseInt(val));
  let blockSizes = lines[2]
    .split(' ')
    .map((val) => parseInt(val))
    .sort((a, b) => a - b);

  let currentSize = 0;
  let numBoxes = 0;

  blockSizes.forEach((blockSize) => {
    if (currentSize + blockSize <= boxSize) {
      numBoxes += 1;
      currentSize += blockSize;
    }
  });

  return `${numBoxes}`;
}

const { readFileSync, existsSync } = require('fs');
const stdin = '/dev/stdin';

if (existsSync(stdin)) {
  const input = readFileSync(stdin, 'utf8');
  console.log(main(input));
}

module.exports = main;